Ready for a springtime switch-up? The Disney Channel is kicking off a one-of-a-kind weekend that will catch some of your favorite Disney stars two-timing their own shows! The "What the What?!?" Guest Star Weekend will boast six awesome star swaps for the ultimate TV mashup, and Yahoo TV has an exclusive first look at what you can expect.

On "I Didn't Do It," Peyton List ("Jessie") guest stars as Lindy's (Olivia Holt) arch nemesis Sherri in the episode "Dance Fever." And from the looks of the above preview clip, these teen rivals really know how to clear a room — even if the room is where the school dance is being held. We're not sure what leads up to Lindy's solo dance party, but List's character ends up with a broken leg, a neck brace, and, apparently, a school suspension.

Speaking of List, her regular show, "Jessie," will feature a double dose of Disney star guest appearances. This sneak peek video shows a really creepy side of "A.N.T. Farm's" Sierra McCormick, who returns to the show to reprise her role as Luke's (Cameron Boyce) obsessive crush, Creepy Connie, in the episode "Creepy Connie 3: The Creepening."

No stranger to the "Jessie" set, McCormick previously turned up in the episodes "Creepy Connie Comes a Callin'" and "Creepy Connie's Curtain Call." But this time Connie doesn't crash this show alone; she shows up with evil sidekick Mackenzie, played by "Dog With a Blog's" G. Hannelius. The "Dog With a Blog" star is even creepier than her Connie counterpart as she attempts to handcuff herself to the love of her life. (That'd be Luke again, and yeah, these stalkers start young.) Mackenzie's final words in the above clip: "I'll be back!" And seriously, we hope she means it.

Other swaps to watch for on the "What the What?!?" Guest Star Weekend:

"Austin & Ally's" Laura Marano will make a pit stop at the "Liv and Maddie" set, where she'll play a wolf-woman named Fangs in the episode "Howl-a-Rooney."

On "Dog With a Blog," doggie blogger Stan needs some training, so who better to help than seasoned "Good Luck Charlie" mom Leigh-Allyn Baker? She plays strict animal instructor Cherri Pickford in the episode "Who's Training Who?" Good luck with that one, mom!